99019471 has 4 divisors (see below), whose sum is σ = 99100000. Its totient is φ = 98938944.

The previous prime is 99019447. The next prime is 99019483. The reversal of 99019471 is 17491099.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17491099 = 31 ⋅564229.

It is a cyclic number.

It is not a de Polignac number, because 99019471 - 2¹³ = 99011279 is a prime.

It is a super-3 number, since 3×99019471³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99019421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38391 + ... + 40888.

It is an arithmetic number, because the mean of its divisors is an integer number (24775000).

Almost surely, 2^99019471 is an apocalyptic number.

99019471 is a deficient number, since it is larger than the sum of its proper divisors (80529).

99019471 is a wasteful number, since it uses less digits than its factorization.

99019471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80528.

The product of its (nonzero) digits is 20412, while the sum is 40.

The square root of 99019471 is about 9950.8527775262. The cubic root of 99019471 is about 462.6368269140.

The spelling of 99019471 in words is "ninety-nine million, nineteen thousand, four hundred seventy-one".